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Posted by on Tuesday, April 23, 2013 at 9:07pm.

Kelli weighs 392 N, and she is sitting on on a playground swing that hangs 0.4 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.1 m above the ground. If Kelli moves through the lowest point at 1.5 m/s, how much work was done on the swing by friction?

  • physics - , Tuesday, March 29, 2016 at 6:35pm


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